Pulse oximeter



FIG. 1 is a top, right, front perspective view of a pulse oximeter showing the new design;

FIG. 2 is a bottom, back, left perspective view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a back view thereof;

FIG. 5 is a side view thereof;

FIG. 6 is another side view thereof;

FIG. 7 is a top view thereof; and,

FIG. 8 is a bottom view thereof.

The broken lines illustrate portions of the pulse oximeter that form no part of the claimed design. The broken lines form no part of the claimed design. 

CLAIM The ornamental design for a pulse oximeter, as shown and described. 